/*
 *  Copyright 2021-2023 Weibo, Inc.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.weibo.rill.flow.service.trace;

import io.opentelemetry.javaagent.shaded.io.opentelemetry.api.trace.Span;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;

import java.util.Objects;

@Component
public class OpenTelemetryTracer implements Tracer {
    private static final String INVALID_TRACE_ID = "00000000000000000000000000000000";

    @Autowired
    private Environment environment;

    public String traceId() {
        Span currentSpan = Span.current();
        if (Objects.isNull(currentSpan)) {
            return null;
        }
        String traceId = currentSpan.getSpanContext().getTraceId();
        if (StringUtils.isEmpty(traceId) || StringUtils.equals(traceId, INVALID_TRACE_ID)) {
            return null;
        }
        return traceId;

    }

    public  boolean isOpenTrace(){
        String environmentValue = environment.getProperty("RILL_FLOW_TRACE_ENDPOINT");
        if (StringUtils.isBlank(environmentValue)) {
            return false;
        }
        return true;
    }
}
